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Tofu taikor.. your car is too heavily modded to have any difference la... :biggrin:


On my humble ride, I've used a variety of plugs and the one that made a difference for me was the Iridiums. Very neglible, but still a difference nonetheless. Acceleration was smoother and I think the car was that very slightly more responsive. These were 1 year old used plugs that I borrowed off a friend. Switching back to stock NGK coppers the feel was instantly different, rougher acceleration and somewhat noisier.


Mind you, my butt dyno was for my own car which I'm quite sensitive about mainly because it was my daily ride. And the main reason for my hypersensitivity is because my car has broken down on me one too many times (including a timing belt snap) so the slightest of difference I get worried.


But that's not saying the price you pay for these plugs is justified. I'd still rather stick to el-cheapo plugs and just change them more regularly.


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